Optimization of accumulation and pumping periods during well cyclic operation

Abstract

In this work, the authors have expanded the boundaries of the scientific and methodological foundations of the effective operation of wells in the short-term periodic mode of their operation. Based on the symbiosis of numerical, physico-mathematical and hydrodynamic modeling methods, the mechanism of fluid inflow to the well is investigated, in particular, the need for a differentiated approach to determining the optimal periods of accumulation and drainage of deposits is substantiated in detail. Based on the proposed mathematical formulas, an integral assessment of the variation in the values of the periods of accumulation and selection of liquid was made, which, in conditions of a significant deterioration in the energy state of deposits, will allow the subsurface user to obtain additional oil production from a fund that is low-profitable for habitual operation. The models developed by the authors, describing the dependence of pressure changes on time when working in a short-term periodic mode, have a wide range of use due to their adaptation to various mining and geological conditions of field development.